Automatic fire-extinguisher.



P. ALLEN.

AUTOMATIC PIRE EXTINGUISBER.

APPLIGATION FILED AUG. l?, 1911.

1,011,005. Patented Dec.5, 1911.

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. of the valve,41*`igs. 5, (3, and 7,

UNITED STATES PATENT OFFICE.

PHILIP ALLEN, OF PRDVIDENCE, RHODE ISLAND.

AUTOMATIC FIRE-EXTINGUISHER.

To all whom it may concern:

Be it known that I, PHILIP ALLEN, a citizen of the United States,residing at Providence, in the county of Providence and State of RhodeIsland, have invented certain new and useful Improvements in Automatic Fire-Extinguishers, of which the following is a specification.

My invention relates to that class of fire extinguishers which areautomatically operated by the ress'ure of water upon a valve held by a.sol ered member until a predetermined degree of heat fuses the solder.

The essential objects of my invention are oo employ a minimum number ofparts; to avoid the necessity of a metallic plate or cap upon the valveas av bearing for the strut, since such plates have by their tendency toslide from position rendered the assemblage of the parts difficult andthe structure insecure; to obviate the `ecessity of chalking the valve;to render the valve self leveling; to facilitate the dis ersion of thestrut pieces after 'rupture of t e joint; to improve thc bearing of thestrut upon the valve, whereby the valve is prevented from rolling whenthe device is not operating, and is induced to roll when the levers arereleased; to slightly-increase the tension upon the operative parts toincrease the aggregate deflections which may occur; and to cheapen andsimplify the construction of the entire de' vice.

To the above ends primarily m invention consists in such parts and insuc i combinations of parts as fall within the scope of the appendedclaims. v

In the accompanying drawings which form a part of this specification,Figure 1 is a side elevation of an extinguisher enibodying my invention,Figs. 2 and 3, sections of tht` same respectively on linesl a: a:

4, a perspective view front, side, and bottom plan views respectively ofthe lower member of the strut, and Fig. 8, a side elevation of the strutmember before assembling.

and y y of Fig. 1, Fig.

Like reference characters indicate likeV parts throughout the views.

My device comprises a. base 1 consistingir of a polygonal body ortion 2and threadei shank portion 3 fitting and facilitate the use of a'wrenc 1. The polygonal portion of the base consists of a. verticalflange provided with internal Specification of Letters Patent.

Application tiled August 17, 1911.

to a apt the same as a p1 e4 thereon.

Patented Dec. 5. 1911.

Serial No. 644,533.

threads 5 adapt'ed to engage an exteriorly threaded ring 7 which formsthe base of the arch 8 and bears upon the upper marginal face of valveseat 9 which may constitute a diaphragm. The arch 8 carriesthe usualdellecting plate 10, and the dish or plate 9 is provided with a centralopening l1 to receive the convex lower lacc of the valve 1Q. This valvemay be composed of glass, porcelain, or any other hard or vitreoussubstance. In detail the valve is provided upon its top face with twooppositely disposed segmental shaped elevations 13 and 14 whose pointsare interspaccd from each other at the center of the valve surface as at14. The sides of the elevations constitute shoulders. The elevation 13has sides or shoulders 15 and 16, while the similar elevation 14 hasshoulders or sides 17 and 18. Shout ders 15 and 18 are in substantialalinemcnt, and shoulders 16 and 17 parallel with each other. Thedescribed elevations form resultant depressions or seats Q0 and 21 ofsegmental outline.

The valve holding device consists of a strut 24, a primary lever 25, anda secondary lever 2G. The strut Q4 comprises a broa body portion 2Tprovided upon its lower or valve bearing end with two transverselydisposed opposiiely directed flat lateral lugs 28 and Q9 otl segun-,nmloutline. one straight margin of cach lug being formed by the plateitself, and the other straight edges, 30 and 31 respectively, being insubstantial alinement. The pla tc i4 is composed of clas tic materialand when originallyr struck upon the vdies the lugs or oars Q8, 2i), areslightly inclined downwardly from the body portlon as shown in Fig. 8.After assemblage however the lower faces of the ears are forced intocontact throughout theirareas with the surfaces or seats 2l and l0 ofthe valve. rlhe earslhen assume a position in the same horizontal planeas shown in Fig. (5. The stored up energy in impart an initial impulseor increase the impulse which scatters the parts when fusion occurs.Therefore it is not essential with the form of strutthat the valve seat9 have elasticity, but if the latter is elastic the ears valuably tion.It) will be observed that the ears 28 and 29 afford a maximum of bearingarea upon the valve and distribute the pressure A secure relativepositioning of the valve and strut is secured by the abutment the earsis sullicient tov augment such elastic ac of the straight ed es andmargins of the ears against the ra ial shoulders 15, 16, 17, und 18 o1'the segmental elevations. The primary lever has its offset portion 33soldered against the arch and is in Contact with the upper end of thestrut as usual. The secondary lever has its offset portion 35 extendingthrough an orifice 36 in the strut to engage the lower end of the lever25 as usual. The parts 26 and 27 are engaged to eich other and to thestrut by solder in the usual Well known manner.

What I claim is l 1. In an automatic fire extin usher, the combinationwith valve seat an arch, of a valve in the seat, a strut, Het earsextending from opposite sidesl of the strut, resting against the valve,elevations upon the valve against which the edges of the ears areadapted to abut, and operative connections between the strut and thearch.

2. In an automatic fire extinguisher, the combination of a. valve seat,a valve in the seat, a strut provided with transversely disposedoppositely directed elastic cars resting upon the valve, heat actuateddevices pressing the strut toward the valve whereby the `and leverconnect-ions between the strut and the arch.

In testimony whereof I have aflixed my signature in presence of twowitnesses.

PHILIP ALLEN. Witnesses:

HonA'rIo E. BELnows, ,GEORGE H. MGLAUGHLIN.

vears are sprung out of their original shape

